Process of removing tar in recovering ammonia.



E. WAGENER.

mocnss 0F REMOVING TAR m REGOVERING AMMONIA.

APPLIGLI'IOK FILED NOV. 5 1909.

977,909. Ptented Dec. 6, 1910.

EMIL \VAGENER, OF DAHLHAUSEN-ON-THE-RUHR. GERMANY.

PROCESS OF REMOVING TAR IN RECOVERING AMMONIA.

anions).

Specification of Letters Patent Patented Dee. ii. 1.91:}.

Application filed November 9. 1909. Serial No, 526.947.

To all whom it may concern:

f le it known that I, EMU. inn-men, a s-lhje't of the King of Prussia. Emperor ot G r nd a re ident of Dahihamen-onthe-Ruhr, Westpha ia, Kingdom of Prussia, (Germany, have invented (ert n new and lmpr-ax'enwnh; in Proeea'is of litemovin; Tar in Recovering Ammonia, of which the following is a specification.

In the production of sulfate of ammonia hy directly introducing the hot distillation gaies, tread from the greater portion of their tar. into the saturater, (lillicultv has heen experienced owing; to the fact taat in the acid hath small quantities of tar are separated and collect on the surface. If this la! is not removed it becomes resinous mixes with the precipitating salt and gives to the anis: a dirty appearalwe. lt is therefore important to provide for a constant removal of {hose quantities of tar even though they are small.

'lhe pnent process. has for its object to f llht llltly remove this tar and includes the further purpose of eontinuoualy renewing the -snrt'are ot the haih in the saturater. 'lo thi end the gas, eontainii"; slight traees of tar. are pre\ iously stated, is passed over the Stll'filt'l of the avid hath and the tar carried h it. and whieh collects on the surface of aid hath. i arried to the periphery of the hath hy the notion of the moving current of gas, whenee. this tar est-apes through an overfl w t-ouneetion. ll necessarily oeenrs that with the small quantity of tar eseaping through the said overflow, larg r quantities of lye are t'tlll'lt'tl oil and this lye is returned into the alurztter near the. snrt'aeein a strong Flltilltl after the elimination ol the tar. By this proreeding a eonstant renewal of the iiqnid oeenrs at the urt'aee lnshllfi the romplete separation of tar; l'nrtln-rmore the nrl'rire is nlaintaiiuul in continuous motion H!llll'fill' lllglllll lxTllltlll llllxtll llltflltlllltl. 'lie. tar tlu-rel'ore icompletely carried (ill and the washing llt id is (?U]]llllll()lt 'l renewed so that ven ir ease of rapid evaporation rl1au 11' of the h "el of the liquid within tho hath eannot or -ur.

ln the titt'tmi mnvil drawin the a ml v rverti -al soetion, partly an elevation, in Fig.

2 a p an view of the apparatui The saturat r l havin; a gm inlet pipe 2 and-two gas outlet renne -lions is provided with an overllow rmmeetion l. to whieh the discharge pipe 3 i euum'i'lel. Said pipe 5 dip-- into the eparating .-t'l t whieh is divided into two ltllllmllllzt'illfi h, J by a partition T, the ruinj mrtnnnls eonnnuniratin; with eavh other heneath the partition. 'lhrongh the dipping pipe 5 a mixture ol tar and l ve llows oll': the tar l ighter 'l et'lllt weight is eparat d \i' zin thev vessel (3 hy ri in; toward the url'at-e and removed by ladliny; it out or it lion's oll' through overflow pipe I) into the \'e el it. The lye pa-ses helow the partition i into the eompartnu-nt fl and [lows hy tuhe 12 into the. \eswl lit from \\'lll('ll it is returned in a strong sn-eann through pipe 15. h v nn-ans-ot the ejertor ll operated l1 v .-leam or (0111- l'n-esaed air Hipplierl through pipe to, into the satnrater near the. surt'a e ot' the liquid thel'ein.

1. The. process for produeing' sulfate of ammonia from goat-s resulting from the distillation of eoal and the like, whieh ronsist in passin; the -aid gases into proximity to an acid-hath. drawing olt' from the. sui'laeo of said lndh iar \vhieh-eolha-ts thereon together with the surt'are portion of the liquid of the hath. separating the tar so drawn otl' from the liquid drawn oti' with it, and returning aid liquid to the hath, the azurfaee' of the hath heing they-eh eulb'lalltl) re- IltWOtl.

2. The prove lor produeing sulfate, of ammonia from gahes remitting from the distillation ot roal and the like. whi h eollsi l in passing the said gases into proximity to an arid hath. drawing" oll' l'roni the surfaee of said. hath tar whieh ('ullei'ls thereon together with the .snrl'are portion ol the liquid of the hath. Separating the tar o drawn (all from the liquid drawn oll' 'Wliil h and returning aid liquid to th hath. near the snrtare of the hath, the .-.url':n-o of the hath heing therehv rolhlzllll l renewed hr theoutflow and inllow of fitlt'lt liquid.

ln lQ. l'lI|10!l V whereo.- have signed this slltl'lfi tfllltlll in the pl'eq-nee of two suhserihmg witnesses.

EMU; 'Atil'lNllll. Wit newt-s:

Louis Vannom', l l in x a. Semi. 1a.. 

